"Lem had a pacemaker fitted earlier in the year because he’d been suffering from irregular heartbeats, and then his diabetes started playing him up. But his ticker's fine now and he’s made sufficient changes to his lifestyle and diet in order to combat the diabetes, it’s just that he felt he wasn’t 100 percent ready to go back on the road just yet."

Last month, Motorhead were forced to postpone their European tour until February to give Lemmy enough time to recover from his health problems.

Campbell added that it's difficult to tell how Lemmy is feeling these days: "The main problem is that he’s displayed such a hard persona all his life that it makes it difficult for him to let people in. He’s like the John Wayne of rock – always wanting to soldier on and handle things on his own, you know?"